Note 12 - Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unrealized foreign currency translation adjustment, net of tax	$ (8)	$ 4,955	$ (8)	$ 6,520
Less: Reclassification adjustment for net gains included in net (loss) income	0	28,246	0	27,954
Net foreign currency translation adjustment	(8)	(23,291)	(8)	(21,434)
Unrealized holding gains (losses) arising during the period, net of tax	(1,419)	5,549	15,795	13,615
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax	(741)	(35,016)	8,869	(34,938)
Net unrealized (losses) gains on investments	(678)	40,565	6,926	48,553
Other Comprehensive (Loss) Income	(686)	17,274	6,918	27,119
Other Comprehensive Income (Loss) [Member]
Other Comprehensive Income (Loss), before Tax [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Portion Attributable to Parent [Abstract]	(12)	4,955	(12)	6,520
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment Realized upon Sale or Liquidation, before Tax	0	39,863	0	39,571
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax	(12)	(34,908)	(12)	(33,051)
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax	(2,183)	5,549	24,300	13,615
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, before Tax	(1,140)	(52,323)	13,645	(52,245)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax	(1,043)	57,872	10,655	65,860
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	(1,055)	22,964	10,643	32,809
Other Comprehensive Income (Loss), Tax [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Translation Gain (Loss) Arising During Period, Tax	(4)	0	(4)	0
Other Comprehensive Income (Loss), Foreign Currency Translation Reclassification Adjustment Realized upon Sale or Liquidation, Tax	0	11,617	0	11,617
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	(4)	(11,617)	(4)	(11,617)
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax	(764)	0	8,505	0
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Tax	(399)	(17,307)	4,776	(17,307)
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	(365)	17,307	3,729	17,307
Other Comprehensive Income (Loss), Tax	(369)	5,690	3,725	5,690
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unrealized foreign currency translation adjustment, net of tax	(8)	4,955	(8)	6,520
Less: Reclassification adjustment for net gains included in net (loss) income	0	28,246	0	27,954
Net foreign currency translation adjustment	(8)	(23,291)	(8)	(21,434)
Unrealized holding gains (losses) arising during the period, net of tax	(1,419)	5,549	15,795	13,615
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax	(741)	(35,016)	8,869	(34,938)
Net unrealized (losses) gains on investments	(678)	40,565	6,926	48,553
Other Comprehensive (Loss) Income	$ (686)	$ 17,274	$ 6,918	$ 27,119